Make spacing more standard

app/src/main/res/layout/about.xml

@@ -3,35 +3,34 @@
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="fill_parent"
     android:layout_height="fill_parent"
-    android:layout_margin="@dimen/about_margin"
     android:layout_toRightOf="@+id/logo"
     android:layout_toEndOf="@+id/logo"
+    android:padding="@dimen/spacing_normal"
     android:orientation="vertical" >
 
     <TextView
         android:id="@+id/title"
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="@dimen/about_spacing"
+        android:layout_marginBottom="@dimen/spacing_normal"
         android:text="@string/app_name"
         android:textAppearance="?android:attr/textAppearanceLarge" />
 
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="@dimen/about_spacing"
+        android:layout_marginBottom="@dimen/spacing_normal"
         android:text="@string/about_description" />
 
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="@dimen/about_spacing"
+        android:layout_marginBottom="@dimen/spacing_normal"
         android:text="@string/about_license" />
 
     <TextView
         android:layout_width="wrap_content"
         android:layout_height="wrap_content"
-        android:layout_marginBottom="@dimen/about_spacing"
         android:text="@string/about_web"
         android:autoLink="web" />
 

app/src/main/res/values/dimens.xml

@@ -1,5 +1,4 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <dimen name="about_margin">20dp</dimen>
-    <dimen name="about_spacing">15dp</dimen>
+    <dimen name="spacing_normal">16dp</dimen>
 </resources>